diff --git a/package.json b/package.json
index b70d6dd..ec5273d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "Miru",
-  "version": "4.4.13",
+  "version": "4.4.14",
   "author": "ThaUnknown_ <ThaUnknown@users.noreply.github.com>",
   "description": "Stream anime torrents, real-time with no waiting for downloads.",
   "main": "build/main.js",
diff --git a/src/renderer/views/Player/Player.svelte b/src/renderer/views/Player/Player.svelte
index d6a6031..fb7de20 100644
--- a/src/renderer/views/Player/Player.svelte
+++ b/src/renderer/views/Player/Player.svelte
@@ -156,7 +156,7 @@
   $: checkAvail(current)
   let hasNext = false
   let hasLast = false
-  function checkAvail () {
+  function checkAvail (current) {
     if ((media?.media?.nextAiringEpisode?.episode - 1 || media?.media?.episodes) > media?.episode) {
       hasNext = true
     } else if (videos.indexOf(current) !== videos.length - 1) {
@@ -339,9 +339,10 @@
     }
   }
   function updatePiPState (paused) {
-    if (!document.pictureInPictureElement || document.pictureInPictureElement.id) return
-    if (paused) document.pictureInPictureElement.pause()
-    else document.pictureInPictureElement.play()
+    const element = /** @type {HTMLVideoElement | undefined} */ (document.pictureInPictureElement)
+    if (!element || element.id) return
+    if (paused) element.pause()
+    else element.play()
   }
   $: updatePiPState(paused)
   function togglePopout () {
@@ -647,7 +648,7 @@
   function getBufferHealth (time) {
     for (let index = video.buffered.length; index--;) {
       if (time < video.buffered.end(index) && time >= video.buffered.start(index)) {
-        return parseInt(video.buffered.end(index) - time)
+        return (video.buffered.end(index) - time) | 0
       }
     }
     return 0
@@ -681,7 +682,7 @@
   ]
   function isChapterSkippable (chapter) {
     for (const [name, regex] of skippableChaptersRx) {
-      if (regex.test(chapter.text)) {
+      if (/** @type {RegExp} */ (regex).test(chapter.text)) {
         return name
       }
     }
diff --git a/src/renderer/views/ViewAnime/Controls.svelte b/src/renderer/views/ViewAnime/Controls.svelte
index e8bb022..6e3e2d2 100644
--- a/src/renderer/views/ViewAnime/Controls.svelte
+++ b/src/renderer/views/ViewAnime/Controls.svelte
@@ -30,7 +30,7 @@
     }
     update()
   }
-  function getStatusText () {
+  function getStatusText (media) {
     if (media.mediaListEntry) {
       const { status } = media.mediaListEntry
       if (status === 'PLANNING') return 'Remove From List'
@@ -85,7 +85,7 @@
     }
     return 'Play'
   }
-  async function play () {
+  async function play (media) {
     let ep = 1
     if (media.mediaListEntry) {
       const { status, progress } = media.mediaListEntry
diff --git a/src/renderer/views/ViewAnime/ViewTrailer.svelte b/src/renderer/views/ViewAnime/ViewTrailer.svelte
index 3767c33..3f26736 100644
--- a/src/renderer/views/ViewAnime/ViewTrailer.svelte
+++ b/src/renderer/views/ViewAnime/ViewTrailer.svelte
@@ -25,7 +25,7 @@
             src={'https://www.youtube.com/embed/' + $url}
             frameborder='0'
             title='trailer'
-            allowfullscreen='allowfullscreen'
+            allowfullscreen
             class='w-full h-full position-absolute rounded top-0 left-0' />
         </div>
       </div>
diff --git a/types.d.ts b/types.d.ts
index 1fb8125..a816e67 100644
--- a/types.d.ts
+++ b/types.d.ts
@@ -1,9 +1,22 @@
 export {}
 
+type Track = {
+  selected: boolean
+  enabled: boolean
+  id: string
+  kind: string
+  label: string
+  language: string
+}
+
 declare global {
   interface Window {
-    IPC: any;
+    IPC: any
     port: MessagePort
+    version: {
+      platform: string
+      arch: string
+    }
   }
   interface EventTarget {
     on: (type: string, callback: (any) => void, options?: boolean | {}) => void
@@ -13,4 +26,8 @@ declare global {
     removeListener: (type: string, callback: (any) => void) => void
     off: (type: string, callback: (any) => void) => void
   }
+  interface HTMLMediaElement {
+    videoTracks: Track[]
+    audioTracks: Track[]
+  }
 }